The T1DQ2 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 1.02 to 1.19 GHz, Insertion Loss 0.5 dB, Isolation 40 dB, Operating Temperature -10 to 86 Degree C. Tags: Module with Connectors, Coaxial Isolator. More details for T1DQ2 can be seen below.